Steam-boiler setting.



No. 791,281. .f i l l PATENTBD MAY 30, 1905.

-' .,M. J. MOGARTHY.

STEAM BOILER SETTING.

APPLIOATION F'ILBD JUNI'. 9, 1904.

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wall 11, as shown in No. Y7131.281.

f UNITED STATES Patented May so, 1905.

PATENT OEEicE.

MICHAEL J. MCCARTHY, OF CHICAGO, ILLINOIS.

STEAM-BOILER SETTING.

SPCIFICATION forming part of Letters Patent No. 791,281, dated. May 30, 1905. Application filed June 9, 1904. Serial No. 211,831.

To all whom, ifm/ay con/cern:

Be it known that I, MICHAEL J. MCCARTHY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and usefulImprovements in Steam-Boiler Settings, of which the following is a specication.

This invention relates to improvements inl steam-boiler settings, and has for-its object to provide an arrangement of this character that will lessen the volumeof smoke by creating a more perfect and economicalY combustion and at the same time proportionately increase masonry; B, the arched top wall, which is a continuation of the side walls; C, the rear end wall; D, the front end wall, and E the boiler. The boiler or fire-front will ordinarily be of the usual form of construction, but may be varied'from, if necessary. The fuel-passage 6 opens through the front wall into the cornbustion-chamber 7 and the passage 8 into the ash-pit 9, divided from the combustion-chamber by the grate-bars 10, the rear ends of which are properly supported in the bridge- Fig. 1. The boiler will be of the usual construction,

the rear end thereof being supported on the inner edge of a transverse plate 1 2, the respective ends of which are anchored in the inclosing side walls, as shown in Fig. 4. This plate is of considerable width and supports a division-wall 13 on the outer edge thereof, as

fines 17, as shown in Figs. 1 and2. A flanged breeching 18 is rigidly inserted in place between the division-walls and the arched wall B and opens outward into a smoke-stack 19, surmounted thereon. A longitudinal division-wall 20, Fig. 3, extends inward to the the boiler-flues into the smoke-box, and finally escapes therefrom through the smoke-stack, the course described being indicated by a series of arrows. It will be noted by this arrangement that the products of combustion will travel the lengthof the boiler three different times and has direct contact with both l the upper and lower surfaces before entering the flues, so that the volume of heat escaping into the atmosphere is reduced to a minimum.

The longitudinal floor-wall 20 may be extended higher up on the sides of the boiler when necessary in diminishing or contracting the area of the passage 15.

The rear wall is provided with auxiliary draft-openings 23, which open into compartment 21 and provide for they admission of atmospheric air at this point when necessary in regulating the process of combustion, the volume of air admitted through the rear wall being controlled by draft-doors y24 and 25, as shown in Fig. 2. The rear wall is also provided with an opening 26, Fig. 1, located beporting" the boiler on one edge thereof, the transverse Walls supported by the plate, said Walls forming between them a smoke-box, and the breeching located between said transverse walls, substantially as set forth.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

MICHAEL J. MCUARTHY. Witnesses:

L. B. COUPLAND, G. E. CHURCH. 

